Which research evidence would most influence a group of nurses to change their practice?
a. Expert committee report of recommendations for practice
b. Systematic review of randomized controlled trials
c. Nonexperimental descriptive study
d. Critical pathway
ANS: B
Research findings are graded using a hierarchy of evidence. A systematic review of randomized controlled trials is Level A and provides the strongest evidence for changing practice. Expert committee recommendations and descriptive studies lend less powerful and influential evidence. A critical pathway is not evidence; it incorporates research findings after they have been analyzed.
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